| Love Buzz Limited | Wholesale & retail | 2017 |
| Lowco Properties Limited | Administrative & support | 1996 |
| Lower Kenly Produce Limited | Agriculture & fishing | 2023 |
| LSR Engineering Limited | Professional & scientific | 2023 |
| Luceo Aesthetics Limited | Other services | 2020 |
| Lynart Shepherd Ltd | Construction | 2010 |
| M & J Stott Limited | Hospitality | 2012 |
| M 4 Energy Limited | Energy | 2013 |
| M&M Motorhome Renovations Ltd | Manufacturing | 2025 |
| M.A.K Electrical Contractors Ltd | Construction | 2014 |
| M.B. Property Company (Edinburgh) Limited | Real estate | 1982 |
| Macaulay Motors Ltd | Wholesale & retail | 2019 |
| Machardy Law Limited | Professional & scientific | 2012 |
| Macpherson Renewables Limited | Energy | 2025 |
| Macphersons Electrical Services Limited | Construction | 1997 |
| Mactrax Limited | Manufacturing | 2017 |
| Malgorzata Bastkowska Ltd | Transport & logistics | 2023 |
| Mamani Cellars Limited | Wholesale & retail | 2026 |
| Mamba 2.0 Limited | Hospitality | 2023 |
| Mamba 3.0 Limited | Hospitality | 2024 |
| Mark Guild Oils Limited | Wholesale & retail | 1993 |
| Maryton Garage Ltd | Wholesale & retail | 2016 |
| Mathmaths Limited | Information & communication | 2010 |
| Mayhem Hockey Ltd | Wholesale & retail | 2026 |
| MB95 Limited | Wholesale & retail | 2018 |
| MC3 Property Ltd | Real estate | 2025 |
| Mccall Energy Limited | Energy | 2015 |
| Mcculloch 1962 Limited | Extraterritorial | 2014 |
| Mcewan Livestock Limited | Agriculture & fishing | 2022 |
| Mcewan Potatoes Ltd | Administrative & support | 2013 |
| Mcintosh of Dyce Limited | Extraterritorial | 2011 |
| Mckenna Services (Scotland) Limited | Administrative & support | 2012 |
| Mcrono Ltd. | Administrative & support | 2024 |
| Mcwilliam Holdings Limited | Financial services | 2019 |
| Me&C (Tayside) Limited | Other services | 2022 |
| Meadowbank Enterprises (Arbroath) Limited | Agriculture & fishing | 1972 |
| Melrose Haulage Limited | Transport & logistics | 2014 |
| Messrs J & M Anderson Limited | Agriculture & fishing | 2013 |
| Messrs W G Johnston & SON Limited | Agriculture & fishing | 2003 |
| Middleton of Rora Dairy Produce Limited | Manufacturing | 2016 |
| Mikanda Properties Ltd | Real estate | 2019 |
| Mike Watt Construction Ltd | Construction | 2016 |
| Mikkelsen Design Ltd | Wholesale & retail | 2016 |
| Milnbank Limited | Construction | 2003 |
| Milne & Wilson (Bodyshop) Limited | Wholesale & retail | 2006 |
| Milne Agri Limited | Agriculture & fishing | 2017 |
| Miltonbank Limited | Real estate | 2016 |
| Mitchell of Letham Limited | Real estate | 1985 |
| MLM Estate Agents Ltd | Real estate | 2025 |
| MLM Financial Services Ltd | Financial services | 2022 |
| MLM Group Ltd | Construction | 2024 |
| MMS Consultants (UK) Limited | Manufacturing | 2006 |
| MO Access Solutions Ltd | Manufacturing | 2024 |
| Mobile Blasting Services Ltd. | Administrative & support | 2017 |
| Monarch Homes CDI Ltd | Construction | 2023 |
| Monikie Farms Limited | Agriculture & fishing | 2013 |
| Morrison Oilfield Limited | Professional & scientific | 2004 |
| Morton Interserv Limited | Professional & scientific | 2011 |
| Mosston Muir Farm Limited | Agriculture & fishing | 2015 |
| MOT Test Tayside Ltd | Wholesale & retail | 2022 |
| Motech Garage Ltd | Wholesale & retail | 2017 |
| Mrrjm Ltd | Construction | 2023 |
| Muir Gairloch Limited | Real estate | 2018 |
| Muir Gilmerton Limited | Real estate | 1999 |
| Muir Rope Access Ltd | Mining & quarrying | 2025 |
| Munro Design Ltd | Professional & scientific | 2024 |
| Museum Data Systems Limited | Professional & scientific | 2004 |
| Nanotech AD Ltd | Information & communication | 2014 |
| Naranco (Forfar) Limited | Administrative & support | 2007 |
| Naturelle (Forfar) Limited | Wholesale & retail | 2002 |
| Netherkelly Farms Ltd | Agriculture & fishing | 1994 |
| Netherton Tractors Limited | Wholesale & retail | 1984 |
| Nevis Developments (Angus) Ltd | Construction | 2018 |
| Nevjam Properties Ltd | Real estate | 2023 |
| Nicoll Associates Limited | Hospitality | 2005 |
| Nkrc Ltd | Mining & quarrying | 2013 |
| NLS Lifting Services Ltd | Other services | 2025 |
| NOA Art Scotland Ltd | Arts & recreation | 2025 |
| Noodle INK Ltd | Information & communication | 2024 |
| Noranbank Farms Limited | Agriculture & fishing | 2008 |
| Noremac Dunnichen Limited | Administrative & support | 2006 |
| North Easterly Roofline (Scotland) Limited | Administrative & support | 2016 |
| North Grange Ventures Ltd | Wholesale & retail | 2017 |
| North Street Chip Shop (Forfar) Limited | Wholesale & retail | 2009 |
| Northern Estates Scotland Limited | Professional & scientific | 2013 |
| Nutscene Twines Ltd | Manufacturing | 2016 |
| NYC Mart Limited | Wholesale & retail | 2025 |
| Oatcake Ltd | Hospitality | 2022 |
| Oban Scallop Gear Limited | Manufacturing | 2008 |
| Objets D'Art Limited | Professional & scientific | 2004 |
| OBY Property Ltd | Construction | 2024 |
| Ocean Property Lettings Ltd | Real estate | 2020 |
| Oceans and Clouds Ltd | Hospitality | 2021 |
| Octogrip Ltd | Administrative & support | 2020 |
| Ogilvy Spirits Limited | Manufacturing | 2013 |
| Ollydents Ltd | Manufacturing | 2024 |
| Opis Solutions Ltd | Administrative & support | 2024 |
| Orange Medical Ltd | Health & social care | 2024 |
| Ossian Circle Ltd | Education | 2021 |
| Ovenstone Limited | Administrative & support | 2007 |